Answer: corpuscles

AnswerCrossword Clue
CORPUSCLESErythrocytes
corpusclesCORPUSCLE, a cell or other minute body suspended in fluid, esp a red or white cell in the blood also CORPUSCULE
corpusclesA minute particle regarded as the basic constituent of matter or light
corpusclesA minute body or cell in an organism, esp. a red or white cell in the blood of vertebrates